CN201212664Y - LED lamp device - Google Patents

Abstract

The utility model discloses a light emitting diode lamp device mainly includes: at least one light-emitting module and a heat dissipation module. The radiating module is composed of a plurality of radiating fins, is annularly connected in series in a radial shape at intervals around the periphery of the light-emitting module, is respectively at the peripheral edge of the radiating fins and is reversely folded towards the direction of the light-emitting module to form a bending edge with a preset distance, and the outer side of the reverse folding part of the bending edge is approximately arc-shaped, so that the edge of the outer side of each radiating fin is reversely folded in a rib-shaped arc shape, thereby ensuring that a user can safely hold and take the radiating fins and simultaneously improving the strength of the radiating fins.

Description

Light-emitting diode lighting device

technical field

The utility model relates to a lamp, in particular to a light-emitting diode lamp with cooling fins.

Background technique

Among the various light bulbs on the market, projector lamps have always accounted for a fairly fixed proportion for a long time. The traditional projection lamp uses a 110-volt halogen projection bulb, which not only consumes a lot of power, but also tends to generate heat, and has a relatively short lifespan. The average lifespan is only a few months. In this era of high electricity prices, it is not only very environmentally friendly, Moreover, the high heat emitted can easily cause dangerous accidents such as electric wires catching fire.

Therefore, some technicians once introduced a projection lamp using LED as the lighting source, and used the characteristics of low power consumption of LED to improve the shortcomings of traditional halogen projection bulbs. Please refer to FIG. 1 , which is a schematic diagram of the appearance of an existing LED projection bulb. Wherein, the existing LED projection bulb 1 is mainly composed of a casing 11 , a voltage converting unit 12 and an LED unit 13 . The LED unit 13 and the voltage converting unit 12 are disposed inside the metal casing 11 . The original 110 volts of alternating current is converted by the voltage conversion unit 12 into a direct current that can be used by the LED unit 13 , so that the LED unit 13 can emit light to achieve the effect of projection.

For the structure of the aforementioned existing LED projection bulb 1 , although it has the effect of saving electricity and environmental protection compared with the traditional halogen projection bulb, there will also be a problem of heat dissipation when using the LED unit 13 . In particular, the LED unit 13 has a lower degree of heat resistance than the traditional halogen projection bulb, and once the temperature exceeds its allowable set value, the brightness generated by the LED unit 13 will be attenuated and the expected effect cannot be achieved. , and even reduce its normal service life.

Therefore, for the heat generated by the LED unit 13 during operation, it can only be dissipated slowly into the air by the metal shell 11 , and the heat dissipation effect thereof can be said to be rather unsatisfactory. Therefore, such existing LED projection bulbs 1 can only use LED units 13 of 1 watt at most, resulting in a certain limit to the brightness they can provide, and cannot effectively improve and replace traditional halogen projection bulbs. Traditional halogen projection bulbs with high power consumption and high heat generation still occupy a certain proportion of the market, resulting in a considerable waste of energy.

Contents of the invention

The main purpose of this utility model is to provide a light-emitting diode lamp device with good heat dissipation, so as to overcome the disadvantages of the original lamps, such as low heat resistance of LEDs, weakened LED brightness and shortened lifespan under unsatisfactory heat dissipation conditions.

The secondary purpose of the utility model is to provide a light-emitting diode lamp device, the lamp of which is not easy to distort and deform and will not scratch the user.

In order to achieve the above and other objectives, the utility model provides a light emitting diode lighting device, which mainly includes: at least one light emitting module and a heat dissipation module. The heat dissipation module is composed of a plurality of heat dissipation fins, which are connected in series in a radially spaced ring around the periphery of the light emitting module, and are respectively bent at the outer edges of the heat dissipation fins and toward the direction of the light emitting module for a predetermined distance. The outer side of the reflexed part at the end of the bent side is arc-shaped, so that the peripheral edge of each cooling fin is reflexed in a rib shape.

A beneficial effect of the utility model is that: through the added cooling fins, the heat can be dissipated in time, prolonging the service life of the light-emitting diodes and reducing energy waste.

Another beneficial effect of the utility model is that: by designing the bending edge at the outer edge of the heat dissipation fin and the reflexion of the bending edge, the strength of the heat dissipation fin is increased, the distortion of the heat dissipation fin is avoided, and the length of time is extended. The service life of the lamp is extended, and the user can take it more safely and conveniently.

Description of drawings

FIG. 1 is a schematic diagram of the appearance of an existing LED projection bulb;

Fig. 2 is a three-dimensional exploded view of the light-emitting diode lamp device of the present invention;

Fig. 3 is a three-dimensional combination diagram of the light-emitting diode lamp device of the present invention;

Fig. 4A is a three-dimensional schematic diagram of the cooling fins of the light-emitting diode lamp device of the present invention;

Fig. 4B is a sectional view of the cooling fins A-A of the light-emitting diode lamp device of the present invention;

Fig. 5 is a three-dimensional assembled view of another preferred embodiment of the LED lighting device of the present invention.

Explanation of reference signs: 1-existing LED projection bulb; 11-housing; 12-voltage conversion unit; 13-LED unit; 2, 2a-light-emitting diode lamp device; 21-light-emitting module; 2121-top; 2122-bottom; 2123-through hole; 213-substrate; 214-transparent cover; 215-ring sheath; 2151-top; 2152-side wall; 2153-opening; 216-circuit Plate; 217, 217a-base; 2171-accommodating port; 2172-conductive thread; 2173a-guide pin; 22-heat dissipation module; 221-radiation fin; ;2214 - Reflexion.

Detailed ways

The above-mentioned and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

Please refer to FIG. 2 and FIG. 3 , which are respectively a three-dimensional exploded view and a three-dimensional assembled view of the LED lighting device of the present invention. Wherein, the LED lighting device 2 includes: a light emitting module 21 and a heat dissipation module 22 . The light emitting module 21 includes: at least one LED unit 211 , a heat conduction column 212 , a substrate 213 , a transparent cover 214 , an annular sheath 215 , a circuit board 216 and a base 217 . The heat dissipation module 22 is composed of a plurality of heat dissipation fins 221 , which surround the periphery of the light emitting module 21 and are radially connected in series at intervals.

The heat conduction column 212 is cylindrical and includes: a top end 2121 and a bottom end 2122 , and at least one through hole 2123 is disposed on the top end 2121 . The material of the heat conduction column 212 can be selected from one of metals or alloys such as iron, copper, aluminum, silver, gold and the like with good thermal conductivity.

The heat dissipation module 22 is composed of a plurality of heat dissipation fins 221, which are attached to the periphery of the heat conduction column 212 of the light emitting module 21 and connected in series in a radially spaced ring, and where the heat dissipation fins 221 are attached to the top 2121 of the heat conduction column 212 The heat dissipation fins 221 surround the top 2121 of the heat conduction column 212 to form a concave step 2211 coaxial with the heat conduction column 212 by expanding outward for a preset distance. The heat dissipation fins 221 of the heat dissipation module 22 can be selected from one of iron, copper, aluminum, silver, gold and other metals or alloys with better thermal conductivity.

The substrate 213 is combined with the LED unit 211 , and is disposed on the top 2121 of the heat conduction column 212 and located in the concave step 2211 formed in the center of the heat dissipation fin 221 . A number of IC capacitors can be provided on the substrate 213 to adjust the voltage required for the LED unit 211 to emit light. At the same time, the substrate 213 is used to dissipate the heat generated by the LED unit 211 through the heat dissipation fins 221 . In this embodiment, the material of the substrate 213 may be a metal substrate with better thermal conductivity, such as iron, copper, aluminum, silver, gold or alloys thereof.

The transparent cover 214 covers the top of the LED unit 211 and is located in the concave step 2211 in the center of the heat dissipation module 22, and corresponds to the light source projected by the LED unit 211, so that the light source projected by the LED unit 211 forms a uniform light state , and also has the effect of preventing glare. The transparent cover 214 may be one of a convex lens, a concave lens, a plane mirror and a diffuser plate.

The annular sheath 215 covers the outer frame of the cooling fins 221 . The annular sheath 215 also includes: a top surface 2151 and a side wall 2152 ; the top surface 2151 is disposed on the heat dissipation module 22 , and an opening 2153 is provided in the center corresponding to the same axis of the transparent cover 214 . The side wall 2152 is connected to and surrounds the top surface 2151. The heat dissipation module 22 is framed by the side wall 2152. Since the annular sheath 215 is fixed on the heat dissipation module 22, the annular sheath 215 can be prevented from sliding on the heat dissipation module 22. , so that the two heat dissipation fins 221 are fixed at an appropriate distance to ensure heat dissipation efficiency.

The circuit board 216 includes at least one circuit loop, which is disposed in the base 217 and is electrically connected to the LED unit 211 combined on the substrate 213 through the through hole 2123 on the heat conduction column 212 . The circuit loop of the circuit board 216 achieves the purpose of adjusting the brightness of the LED unit 211 by controlling the intensity of its input current.

The base 217 is a hollow shell with an accommodating opening 2171 above which can accommodate the circuit board 216 inside, and is fixed to the cooling fins 221 surrounded by the bottom end 2122 of the heat conduction column 212 , and is attached to the base 217 A conductive thread 2172 is provided on the outside to electrically connect with the circuit board 216 . In this embodiment, the conductive thread 2172 of the base 217 conforms to the common specifications of metal screw adapters for traditional tungsten light bulbs, and its types generally include: E10, E12, E14, E26, E27, E40 and other different specifications. The number behind the letter E here indicates the diameter of the conductive thread 2172 (for example, a household light bulb is usually E27, that is to say, the diameter of the screw thread of the metal screw adapter of the light bulb is 27mm=2.7cm).

Please refer to FIG. 4A , which is a three-dimensional schematic diagram of the heat dissipation fins of the LED lighting device of the present invention. The heat dissipation fins 221 of the heat dissipation module 22 surround the periphery of the light emitting module 21 and are radially spaced in series in a ring, and are respectively bent at an edge 2212 on the outer side of the heat dissipation fins 221 toward the direction of the light emitting module 21 by a preset distance D A bent edge 2213 of the bent edge 2213 is roughly arc-shaped by means of stamping, so that the outer edge of each cooling fin 221 is shaped like a rib-shaped bent edge 2213, so that the user will not be caught The edge 2212 of the metal cooling fin 221 is scratched.

Please refer to FIG. 4B , which is a sectional view of the heat dissipation fin A-A of the LED lighting device of the present invention. Since the reflexed part 2214 of the bent edge 2213 is bent toward the direction of the light-emitting module 21 in an arc shape, the edge 2212 of the original sharp metal heat dissipation fin 221 is reflexed toward the direction of the light-emitting module 21, so that the surface of the refracted part 2214 is roughly smooth. The arc shape is so that the user can hold and take it more easily and safely without being scratched by the edge 2212 of the metal cooling fin 221 .

At the same time, because the folded edge 2213 makes the edge of the heat dissipation fin 221 form a rib shape, in this preferred embodiment, the folded edge 2213 is roughly close to the surface of the heat dissipation fin 221 after being folded back. The thickness of the outer edge of the heat dissipation fins 221 is roughly twice the thickness of the heat dissipation fins 221, thereby further strengthening the overall strength of the heat dissipation fins 221, and will not be distorted and deformed due to excessive force during assembly or use. .

In other preferred embodiments of the utility model described below, because most of the elements are the same or similar to the foregoing embodiments, the same elements and structures will not be described in detail below, and the same elements will be directly given the same Name and number, and for similar components, give the same name but add an English letter after the original number to distinguish and will not repeat them, and explain in advance.

Please refer to FIG. 5 , which is a three-dimensional assembly view of another preferred embodiment of the LED lighting device of the present invention. Among them, the difference between another preferred embodiment of the light emitting diode lamp structure of the present invention and the preferred embodiment described in Fig. 2 and Fig. The pin 2173a runs through the inside of the base 217a and is electrically connected to the circuit board 216. Through the circuit board 216, the AC voltage of 110 or 220 volts input from the outside can be converted into a DC voltage suitable for the LED unit 211 to work.

To sum up, in the LED lighting device 2 of the present invention, the LED lighting device 2 includes: a light emitting module 21 and a heat dissipation module 22 . The light emitting module 21 further includes: at least one LED unit 211 , a heat conduction column 212 , a substrate 213 , a transparent cover 214 , an annular sheath 215 , a circuit board 216 , and a base 217 . The heat dissipation module 22 is composed of a plurality of heat dissipation fins 221 , which surround the periphery of the light emitting module 21 and are radially connected in series at intervals.

The heat dissipation module 22 is composed of a plurality of heat dissipation fins 221, which are attached to the outer periphery of the heat conduction column 212 of the light emitting module 21 in a radially spaced circular series, and the heat dissipation fins 221 are attached to the top 2121 of the heat conduction column 212 The heat dissipation fins 221 surround a top 2121 of the heat conduction column 212 to form a concave step 2211 coaxial with the heat conduction column 212 by expanding outward for a preset distance. An edge 2212 on the outer side of the heat dissipation fin 221 is folded toward the direction of the light-emitting module 21 and a bent edge 2213 is used to make the folded edge 2214 of the bent edge 2213 roughly arc-shaped, so that the periphery of each heat dissipation fin 221 The edges 2212 of the fins 2212 are rib-shaped bent edges 2213 , thereby increasing the strength of each cooling fin 221 .

The purpose of the substrate 213 is to combine the LED unit 211 on its upper part, and is disposed on the upper part of the top 2121 of the heat conduction column 212 , and located inside the concave step 2211 formed in the center of the heat dissipation fin 221 . The transparent cover 214 covers the upper part of the LED unit 211 and is disposed inside the concave step 2211 at the center of the heat dissipation module 22 , corresponding to the light source projected by the LED unit 211 . The annular sheath 215 covers and surrounds the periphery of the heat dissipation module 22 . The circuit board 216 is disposed inside the base 217 and is electrically connected to the LED unit 211 combined on the substrate 213 through a through hole 2123 on the heat conduction column 212 . The base 217 can accommodate the circuit board 216 inside, and a conductive thread 2172 or at least one guide pin 2173 a is provided on the outside of the base 217 to electrically connect with the circuit board 216 .

Because the reflexed portion 2214 of the bent edge 2213 is bent into an arc shape, the outer edge of the original sharp metal heat dissipation fin 221 is formed into a circular arc shape due to the reflexed portion 2214, which makes the user It is easy to take and use, and will not be scratched by the edge 2212 of the metal heat dissipation fin 221 . At the same time, because of the reflexed bending edge 2213, the peripheral edge of the heat dissipation fin 221 forms a rib shape, which further strengthens the strength of the peripheral edge of the heat dissipation fin 221, so that the user will not suffer from excessive force when assembling or holding it. The purpose of distorting and deforming the cooling fins 221 is caused by the force.

The above description is only illustrative, rather than restrictive, of the present invention. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. Or equivalent, but all will fall within the protection domain of the present utility model.

Claims (9)

1. A light-emitting diode lighting device, characterized in that: it comprises: a lighting module; and A heat dissipation module is composed of a plurality of heat dissipation fins, and the heat dissipation fins surround the periphery of the light-emitting module in radial intervals and are connected in series in a ring, and are respectively located at the outer edges of the heat dissipation fins. And the bending edge with a preset distance is folded toward the direction of the light-emitting module; Wherein, the outer side of the folded part of the bent edge is arc-shaped, and the peripheral edge of the heat dissipation fin is rib-shaped. 2. The light-emitting diode lighting device according to claim 1, wherein the light-emitting module further comprises an annular sheath, and the annular sheath positions and surrounds the periphery of the heat dissipation fins . 3. The light-emitting diode lighting device according to claim 1, wherein the light-emitting module further comprises: at least one LED unit; A heat conduction column, which is cylindrical, and includes a top end and a bottom end, and at least one through hole is provided on the top end; a substrate, arranged on the top of the heat conduction column, and the LED unit is located on the substrate; a transparent cover, which is located in the center of the heat dissipation module and covers the LED unit; A circuit board, including at least one circuit loop, and is electrically connected to the LED unit combined on the substrate through the through-hole on the heat-conducting column; and A base, which is a hollow shell, the circuit board is located in the hollow shell, and an accommodating opening is provided above the hollow shell, the circuit board and the Combined with the bottom end of the thermal conduction column. 4. The light-emitting diode lighting device according to claim 3, wherein the transparent cover is one of a convex lens, a concave lens, a plane mirror and a diffusion plate. 5. The light-emitting diode lighting device according to claim 3, wherein the material of the heat conduction column is one of iron, copper, aluminum, silver, gold or an alloy; and the material of the substrate is It is one of iron, copper, aluminum, silver, gold or their alloys. 6. The light-emitting diode lighting device according to claim 3, characterized in that: a conductive thread is provided on the outside of the base, and the conductive thread conforms to the common specifications of metal spiral adapters of traditional tungsten light bulbs, And it is electrically connected with the circuit board. 7. The light-emitting diode lighting device according to claim 3, wherein the base further includes at least one guide pin, the guide pin penetrates the inside of the base, and is electrically connected to the circuit board. connect. 8. The light-emitting diode lamp device according to claim 1, characterized in that: the refraction is bent toward the direction of the light-emitting module, so that the edge of the original sharp metal heat dissipation fin is reflexed Facing the direction of the light-emitting module, the surface of the reflexion is smooth and arc-shaped. 9. The light-emitting diode lighting device according to claim 8, wherein the edge of the heat dissipation fin is formed into a rib shape after the bending edge is folded back, and the bending edge is folded back And close to the surface of the heat dissipation fins.

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